Answer:
The Nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests that the Solar System formed from gas and dust orbiting the Sun.
Explanation:
Explanation:
Measurement and Estimation of ET. Turf evapotranspiration can be measured or estimated. Measuring methods include use of lysimeter, water balance and eddy correlation method. Estimation methods include energy balance, mass transfer, combination of energy and heat, mass transfer and the use of crop coefficients.
Canals are often time-consuming and expensive to build, this was a large challenge faced in building them. Also, geographical challenges and topographical challenges can often make canal building difficult.
Answer:
Because of the diversion of its sources, it is the Syr Darya and the Amu Darya.
Explanation:
Irrigation projects were built on both rivers and failed. The Amu Darya's former tributary, Zeravshan, does not reach the Amu Darya, causing the Aral Sea's shrinkage.